Union KY ZIP Code

Union city is located in Kentucky State, Boone County and has a unique zip code assigned by the US Postal Service Office.

You can search for the Union KY zip code by its streets and block numbers if we have some of the Union streets loaded in our website

Union Area Code is 859 and Time Zone is Eastern (GMT -05:00).


Union Zip Code - Kentucky

The US ZIP Code basic format consists of five decimal numerical digits assigned to the Union City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Union ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Union, Kentucky.

If you want to send a mail to Union City, you should use the 41091 Zip Code.

In 1983, the U.S. Postal Service introduced an expanded Union ZIP code system that it called ZIP+4, often called "plus-four codes", "add-on codes", or "add ons". A ZIP+4 code uses the basic 41091 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Union city block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in Kentucky.


Union, Kentucky - MAP


ZIP Plus 4 Union - US Streets Zip Codes

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Union ZIP Code Lookup

41091 Zip Code Information:
Zip Code: 41091,
City: Union
Union Area Code: 859
Union, KY - Time Zone: Eastern (GMT -05:00)
County: Boone
City Alias: Hamilton, Union
State: Kentucky
State Abb: KY



Kentucky Zip+4 - Nearby Union Cities

Cities near Union in Kentucky
(straight line)


View more Kentucky zip codes